using System;
using System.Collections.Generic;
using System.Text;

namespace VEPROMS.CSLA.Library
{
	public partial class TransitionInfo
	{
		public string ResolvePathTo(FormatInfo fi, ItemInfo itminfo, ItemInfo toitem, ItemInfo rangeitem)
		{
			StringBuilder retstr = new StringBuilder();
			// get the format of the transition string based on this transition's index into the TransData part of 
			// format....
			string tranformat = fi.PlantFormat.FormatData.TransData.TransTypeList[TranType].TransFormat;
			E_TransUI etm = (E_TransUI)fi.PlantFormat.FormatData.TransData.TransTypeList[TranType].TransUI;
			int startIndex = 0;
			int index = -1;
			while ((index = tranformat.IndexOf("{", startIndex))>-1)
			{
				// Append any non-token text that preceeds the token.
				string remstptext = null;
				if (index > startIndex) 
				{
					retstr.Append(tranformat.Substring(startIndex, index-startIndex));
					remstptext = tranformat.Substring(startIndex, index-startIndex);
				}
				int endtokn = tranformat.IndexOf("}", index);
				string token = tranformat.Substring(index, endtokn - index + 1);
				switch (token)
				{
					case "{Proc Num}":
						retstr.Append(toitem.MyProcedure.MyContent.Number);
						break;
					case "{Proc Title}":
						if (fi.PlantFormat.FormatData.XtraOptions("CapsTransitions"))
							retstr.Append(toitem.MyProcedure.MyContent.Text.ToUpper());
						else
							retstr.Append(toitem.MyProcedure.MyContent.Text);
						break;
					case "{First Step}":	// TODO: LowerCaseTranNumber - lower case substep numbers in transitions
						// If we're on a step put out the step number.
						ItemInfo secitm = TranGetSectionItem(toitem);
						if ((!((etm & E_TransUI.StepAllowNone) == E_TransUI.StepAllowNone)) || toitem.MyContent.Type >20000)
							retstr.Append(toitem.Ordinal.ToString());
						else	// if the word 'step' or ',' preceeds this template & there is no step, remove it.
						{
							if (remstptext != null) 
							{
								int len = remstptext.Length;
								retstr.Remove(retstr.Length-len,len);
							}
						}
						break;
					case "{Last Step}":	// TODO: TStepNoFlag, i.e. include step number in range items.
						retstr.Append(rangeitem.Ordinal.ToString());
						break;
					case "{.}":			// TODO: TStepNoFlag, i.e. include step number in range items.
						retstr.Append("#");		// TODO: Intermediate Range.
						break;
					case "{Sect Hdr}":
						retstr.Append(TranGetSectionHdr(toitem));
						break;
					case "{Sect Title}":
						retstr.Append(TranGetSectionTitle(toitem));
						break;
				}
				startIndex = endtokn+1;
				if (startIndex >= tranformat.Length) break;
			}
			if (startIndex < tranformat.Length) retstr.Append(tranformat.Substring(startIndex, tranformat.Length - startIndex - 1));
			return (retstr.ToString());
		}
		// TODO: Section methods are not complete....
		private ItemInfo TranGetSectionItem(ItemInfo itminfo)
		{
			ItemInfo tmpitm = itminfo;
			while (tmpitm.MyContent.Type >= 20000) tmpitm = tmpitm.MyParent;
			return tmpitm;
		}
		private string TranGetSectionHdr(ItemInfo itminfo)
		{
			ItemInfo tmpitm = TranGetSectionItem(itminfo);
			StringBuilder retstr = new StringBuilder();
			retstr.Append(tmpitm.MyContent.Number);
			if (tmpitm.MyContent.Number != null && tmpitm.MyContent.Number != "" && tmpitm.MyContent.Text != null && tmpitm.MyContent.Text != "") retstr.Append(" ");
			retstr.Append(tmpitm.MyContent.Text);
			return (retstr.ToString());
		}

		private string TranGetSectionTitle(ItemInfo itminfo)
		{
			ItemInfo tmpitm = TranGetSectionItem(itminfo);
			return (tmpitm.MyContent.Text);
		}
		public string PathTo
		{
			get
			{
				return MyItemToID.Path;
			}
		}
		public string PathFrom
		{
			get
			{
				//return "From " + MyContent.ContentItems[0].Path;
				return MyContent.ContentItems[0].Path;
			}
		}
	}
}